A production system for surface leather wrapping and molding of an airbag cover

Abstract

The present application discloses a production system for surface leather covering and molding of a safety airbag cover, including the following workstations that are sequentially coordinated and arranged in a U-shape as a whole: a cutting workstation, a glue coating workstation, a sewing workstation, a covering workstation, a vacuum activation workstation, a hot stamping workstation, a punching workstation, and an inspection workstation. The cutting workstation is suitable for cutting leather, the glue coating workstation is suitable for coating glue on the leather, the sewing workstation is suitable for splicing the leather, the covering workstation is suitable for pre-covering, the vacuum activation workstation is suitable for first heating the glue in the leather to activate it, and then adsorbing and fitting the safety airbag cover and the leather. The hot stamping workstation is suitable for hot stamping marks on the leather, the punching workstation is suitable for punching holes in the safety airbag cover, and the inspection workstation is suitable for quality inspection of the covered safety airbag cover. The beneficial effects of the present application: It realizes the centralized processing of all processes in leather covering, avoids the long-distance transfer of products between different processes, and greatly improves the production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of automotive interior part production equipment, and in particular to a production system for leather covering and forming on the surface of a steering wheel airbag cover. Background Art

[0002] As a main component affecting the deployment of the airbag, the design of the airbag cover not only needs to meet the functional requirements but also be coordinated with the overall appearance of the steering wheel. Modern airbag covers usually adopt high-strength plastic materials such as polypropylene (PP) or polycarbonate (PC), which have good impact resistance and durability.

[0003] In order to pursue the aesthetics of the airbag cover and the feel when touched, the current airbag cover is covered with a layer of leather on the surface, so there are a series of production processes, such as leather cutting, connecting the leather, sewing decorative lines, rubber part treatment, gluing, baking, etc. The existing production method is mainly manual, and the product needs to be transported to different workshops between different processes, thus greatly reducing the production efficiency. For this reason, a production system for leather covering and forming on the surface of an airbag cover is proposed to solve the above technical problems. Summary of the Invention

[0004] One of the purposes of this application is to provide a production system for leather covering and forming on the surface of an airbag cover.

[0005] To achieve the above object, the technical solution adopted in this application is: A production system for leather covering and forming on the surface of an airbag cover, including: a cutting station, a gluing station, a sewing station, a covering station, a vacuum activation station, a hot stamping station, a punching station, and an inspection station, which are sequentially coordinated and arranged in a U-shape as a whole. The cutting station is adapted to cut the leather into a set shape, the gluing station is adapted to coat glue on the leather, the sewing station is adapted to splice the leather, the covering station is adapted to pre-cover the airbag cover with the leather, the vacuum activation station is adapted to first heat the glue in the leather to activate it, and then adsorb and bond the airbag cover and the leather under vacuum conditions, the hot stamping station is adapted to perform logo hot stamping on the leather, the punching station is adapted to punch holes in the airbag cover, and the inspection station is adapted to perform quality inspection on the covered airbag cover.

[0006] Preferably, the glue coating station includes a glue coating device, which comprises a workbench, a glue coating mechanism, a conveying mechanism and an adjusting device. The glue coating mechanism is installed above the workbench. The conveying mechanism is installed on the workbench and cooperates with the glue coating mechanism to form a glue coating area. The adjusting device is installed on the workbench and is connected and cooperated with the conveying mechanism. The adjusting device is adapted to drive the conveying mechanism to perform lifting adjustment so that the glue coating area can adapt to products of different thicknesses.

[0007] Preferably, the conveying mechanism includes conveying rollers, a driving device and a support frame. The support frame is horizontally and rotatably installed on the workbench and is connected to the adjusting device. The conveying rollers are horizontally and rotatably installed on the support frame and cooperate with the glue coating mechanism to form the glue coating area. The driving device is installed on the support frame and its output end is connected to the conveying rollers. During adjustment, the adjusting device is adapted to drive the support frame to rotate along the workbench, thereby realizing the lifting adjustment of the conveying rollers.

[0008] Preferably, the adjusting device includes a telescopic member, a baffle and a first lead screw. The telescopic member is hingedly installed on the workbench, and the piston end of the telescopic member is hinged to the support frame. The baffle is vertically and slidably installed on the workbench. The first lead screw is vertically and rotatably installed on the workbench and cooperates with the baffle. During adjustment, the first lead screw is rotated to drive the baffle to adjust its height. The support frame is adapted to rotate under the drive of the telescopic member until it abuts against the baffle to realize the limit locking of the conveying rollers.

[0009] Preferably, the glue coating mechanism includes a glue chamber, a glue coating roller and a pair of limiting rollers. The glue chamber is installed above the workbench. The glue coating roller is rotatably installed at the material discharging port at the bottom of the glue chamber, and the glue coating roller cooperates with the conveying rollers to form the glue coating area. The limiting rollers are symmetrically installed on both sides of the bottom of the glue chamber with the glue coating roller as the center and cooperate with the glue coating roller. The glue coating mechanism further includes a second lead screw and a frame body. One of the limiting rollers is rotatably installed on the frame body, and the frame body is horizontally slidably installed in the glue chamber. The second lead screw is horizontally and rotatably installed in the glue chamber and cooperates with the frame body. The second lead screw is rotated to drive the limiting rollers to move horizontally, thereby adjusting the material discharging gap between the limiting rollers and the glue coating roller.

[0010] Preferably, the covering station includes a pre-covering tooling fixture for the leather of the airbag cover, which includes: an operating table, a plurality of clamping members and a plurality of limiting components. The middle of the operating table has a placing station for placing the airbag cover. The clamping members are rotatably installed on the operating table through the first ends, and the second ends of the clamping members have clamping portions. The limiting components are installed on the operating table and cooperate with the corresponding clamping members. When clamping, the clamping members are adapted to rotate until the clamping portions abut against the airbag cover, and the limiting components are adapted to lock the clamping members. When loosening, the limiting components are adapted to release the locking of the clamping members, and then the clamping members are adapted to reverse and move the clamping portions away from the airbag cover.

[0011] Preferably, the limiting component includes a limiting pin, and the limiting pin is movably arranged on the operating table. A fixing ring is installed outside the rotating shaft at the first end of the clamping member, and a plurality of limiting grooves are arranged on the outer side of the fixing ring. When the limiting pin cooperates with the limiting groove, the locking of the clamping member is realized.

[0012] Preferably, the limiting pin is movably installed on the operating table through an elastic member. When the clamping member is locked, the limiting pin is adapted to cooperate with the limiting groove under the action of elastic force.

[0013] Preferably, a plurality of sleeves are installed on the operating table. The sleeves are sleeved outside the corresponding limiting pins, and an inclined mouth slope is arranged at the end of the sleeve. The inclined mouth slope has a slope bottom and a slope top. A dial is installed at the end of the limiting pin. When the clamping member is locked, the dial is adapted to cooperate with the slope bottom. When unlocking the clamping member, the limiting pin is adapted to rotate through the dial, and then the limiting pin is adapted to move under the wedge-shaped extrusion cooperation between the dial and the inclined mouth slope and until it is away from the limiting groove.

[0014] Preferably, a base is arranged below the operating table, and the base is connected with the operating table through a lifting rod. The operating table is installed at the movable end of the lifting rod through a driving component, and the driving component is adapted to rotate and adjust the operating table. The pre-covering tooling fixture for the leather of the airbag cover further includes a foot switch, and the foot switch is electrically connected with the driving component. The driving component is adapted to drive the operating table to rotate a set angle under the action of the foot switch.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows:

[0016] The present invention is provided with multiple workstations, and the multiple workstations as a whole are in a U-shaped structure, thereby enabling the leather covering to form a semi-automatic production system. The cooperation between the workstations is close, so as to achieve the centralized processing of all processes in the leather covering, avoid the long-distance transfer of products between different processes, and greatly improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the distribution structure of the production line workstations of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the glue coating device of the present invention.

[0019] Figure 3 For the present invention Figure 2 Partial structure schematic diagram in

[0020] Figure 4 For the present invention Figure 3 Cross-sectional structure schematic diagram of

[0021] Figure 5 For the present invention Figure 4 Partial structure schematic diagram in

[0022] Figure 6 It is a schematic diagram of the adjusting device and the conveying mechanism of the present invention.

[0023] Figure 7 For the present invention Figure 6 Cross-sectional structure schematic diagram of

[0024] Figure 8 It is a schematic diagram of the adjusting device and the conveying mechanism of the present invention after being disassembled.

[0025] Figure 9 It is a schematic diagram of the glue coating mechanism of the present invention.

[0026] Figure 10 It is a schematic diagram of the overall structure of the pre-covering tooling fixture of the present invention.

[0027] Figure 11 It is a schematic diagram of the bracket and the lifting rod of the present invention.

[0028] Figure 12 It is a specific schematic diagram of the top of the workbench of the present invention.

[0029] Figure 13 It is a schematic diagram of the clamping member structure of the present invention.

[0030] Figure 14 It is a schematic diagram of the limiting component structure of the present invention.

[0031] Figure 15It is a schematic diagram of the structure when the limit pin and the sleeve of the present invention cooperate.

[0032] Figure 16 It is a schematic diagram of the weighing and thickness detection assembly of the present invention.

[0033] Figure 17 It is a schematic diagram of a workbench for sticking double-sided tape on a material plate of the present invention.

[0034] Figure 18 It is a schematic structural diagram of the vacuum adsorption device of the present invention.

[0035] Figure 19 It is a schematic structural diagram of the hot stamping machine of the present invention.

[0036] In the figure: 1. workbench; 2. glue coating mechanism; 201. glue coating roller; 202. glue chamber; 203. limit roller; 204. frame; 205. screw 2; 206. transmission component; 207. knob; 3. conveying mechanism; 301. conveying roller; 302. driving device; 303. support frame; 4. adjusting device; 401. telescopic member; 402. baffle; 403. screw 1; 404. handle; 405. transmission component; 5. material plate; 6. workbench; 7. clamping member; 701. clamping part; 702. rotating shaft; 8. lifting rod; 801. upper steel rod; 802. limit screw; 803. lower steel rod; 9. base Seat; 10. Bracket; 11. Working frame; 12. Foot switch; 13. Driving component; 14. Boss; 15. Limiting assembly; 1501. Limiting pin; 16. Fixing ring; 17. Limiting groove; 18. Sleeve; 19. Pick; 20. Bevel; 21. Operating table; 22. Electronic scale; 23. Thickness measuring assembly; 24. Barcode printer; 25. Double-sided film; 26. Vacuum adsorption device; 2601. Moving mechanism; 2602. Adsorption tooling; 2603. Powerful fan; 27. Hot stamping machine; 2701. Servo system; 2702. Upper hot stamping structure; 2703. Lower hot stamping mold; 2704. Moving structure. DETAILED DESCRIPTION

[0037] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0038] In the description of the present application, it should be noted that for orientation terms, such as the terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0039] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0040] One preferred embodiment of the present application is, for example Figures 1 to 19 As shown, a production system for molding the surface leather covering of a safety airbag cover includes multiple workstations, which are sequentially connected and matched between adjacent workstations. As Figure 1 shown, after the multiple workstations are matched, the whole presents a "U" - shaped structure, which is convenient for the transmission and cooperation between the workstations. And semi - automated equipment is adopted in the workstations. Through the coordinated cooperation of the staff, the whole production process of the safety airbag cover and the leather can be realized, greatly improving the production efficiency and reducing the production cost.

[0041] For the convenience of understanding the technological process of the whole production line, the following is a detailed description of each step:

[0042] I. Leather cutting workstation A

[0043] ① Equipment name: Cutting machine (not shown). ② Equipment type: Standard machine. ③ Equipment brand: Aima. ④ Equipment model: S2 - 5716 - P.

[0044] Only one staff member is required to cut the leather according to the set pattern programmed by the computer, and the cutting accuracy is high and the speed is fast. Of course, it is necessary to meet the specified cutting standards: the weight consistency after cutting is ±0.2 g; the cut is clear without burrs, the grain direction is consistent, and there are no appearance defects such as damage and dirt on the outer surface.

[0045] Furthermore, after the leather is cut, it should be detected. Therefore, a detection workstation can also be set after this workstation, as Figure 16As shown in the right figure in , the purpose is to ensure that the quality of leather cutting meets the subsequent covering requirements. Specifically, the leather can be placed on the operating table 21, and then the thickness of the leather can be measured by the sensor in the thickness measuring component 23. The leather is placed on the electronic scale 22 to measure its weight; both the thickness measuring component 23 and the electronic scale 22 are devices well known to those skilled in the art.

[0046] Furthermore, a barcode printer 24 can be installed on the operating table 21, that is, before weighing and thickness measurement, coding is performed on it to mark this leather, so that data in each step can be recorded in the subsequent computer by scanning the code. In the case of using code scanning to record, such a working method (mode) can also be set to prevent staff from transporting non - standard leather to the next process. Exemplarily: Suppose the measured thickness of this leather does not meet the standard. If the staff cannot scan the code of this leather and put it into the recycling bin, then the thickness measuring component 23 will always be in an unusable state; only after the staff scans the code of the non - standard leather and puts it into the recycling bin, the thickness measuring component 23 can return to the normal use state, thus greatly ensuring the production quality of the product.

[0047] It should be noted that the above - mentioned method is not only applicable to the thickness measurement and weighing processes, but can also be applied in the subsequent detection processes, thereby greatly reducing the defective rate of products. Of course, the above control method is automatically controlled by a (PLC) controller, and the control circuit can be realized by programming by those skilled in the art, which belongs to the common knowledge in the art, so this application document will not explain the control method and circuit connection in detail.

[0048] II. Gluing Station B

[0049] It is mainly completed by the automotive interior part surface hot - melt glue coating device (referred to as the glue coating device), as Figures 2 to 9 shown. The glue coating device includes a workbench 1, a glue coating mechanism 2, a conveying mechanism 3, and an adjusting device 4. Among them, the glue coating mechanism 2 is installed above the workbench 1, the conveying mechanism 3 is installed on the workbench 1 and cooperates with the glue coating mechanism 2 to form a glue coating area, and the adjusting device 4 is installed on the workbench 1 and is connected and cooperated with the conveying mechanism 3.

[0050] It can be understood that when gluing, the product (i.e., leather) is placed on the workbench 1, and the conveying mechanism 3 can convey the product. During the conveying process, the glue coating mechanism 2 will perform the gluing operation on the product. When adjusting, the adjusting device 4 can drive the conveying mechanism 3 to perform lifting adjustment, so that the distance between the conveying mechanism 3 and the glue coating mechanism 2 changes, that is, the glue coating area can be adjusted to adapt to products of different thicknesses, greatly improving the flexibility and convenience of the device.

[0051] The structure of the conveying mechanism 3 in this application is not specifically limited. The following provides a specific embodiment for reference:

[0052] As Figure 7 shown, the conveying mechanism 3 includes a conveying roller 301, a driving device 302, and a support frame 303. The support frame 303 is horizontally rotatably installed on the workbench 1 and is connected to the adjusting device 4. The conveying roller 301 is horizontally rotatably installed on the support frame 303 and cooperates with the gluing mechanism 2 to form a gluing area. The driving device 302 is installed on the support frame 303 and its output end is connected to the conveying roller 301.

[0053] It can be understood that during conveying, the driving device 302 can drive the conveying roller 301 to rotate, so that the products on the conveying roller 301 will be conveyed under the action of friction. The driving device 302 is preferably a motor. Of course, in order to reduce the stress concentration on the support frame 303, as Figure 6 shown, the conveying roller 301 and the motor can be installed separately, and a belt drive (or chain drive) can be used for cooperation and connection between the two.

[0054] During adjustment, the adjusting device 4 can drive the support frame 303 to rotate along the workbench 1, and the rotating support frame 303 can drive the conveying roller 301 to adjust up and down to adapt to products of different thicknesses.

[0055] In this embodiment, as Figure 7 and Figure 8 shown, the adjusting device 4 includes a telescopic member 401. The telescopic member 401 is hingedly installed on the workbench 1, and the piston end of the telescopic member 401 is hinged to the support frame 303. It can be understood that when the telescopic member 401 extends or contracts, the support frame 303 can be driven to rotate and adjust. Of course, the specific structure and working principle of the telescopic member 401 are well-known technologies to those skilled in the art, so they will not be elaborated in detail here; common telescopic members 401 include hydraulic cylinders, pneumatic cylinders, and linear motors, etc., and those skilled in the art can select according to actual needs.

[0056] Based on the above embodiment, there may be a problem of inaccurate adjustment during adjustment. Especially for multiple products with similar thickness dimensions, it is not precise enough to adjust only through the micro-expansion and contraction of the telescopic member 401. Moreover, we know that the telescopic member 401 is installed in a hinged manner, so the support and limiting effect on the support frame 303 is not good enough.

[0057] To solve the above technical problems, this embodiment is further optimized: As Figure 7As shown, the adjusting device 4 further includes a baffle 402 and a first lead screw 403. The baffle 402 is vertically and slidably mounted on the workbench 1, and the first lead screw 403 is vertically and rotatably mounted on the workbench 1 and cooperates with the baffle 402.

[0058] It can be understood that during adjustment, first rotate the first lead screw 403, and the first lead screw 403 can drive the baffle 402 to move up and down. Adjust the baffle 402 to an appropriate height; then rotate the support frame 303 upward through the telescopic member 401 until the support frame 303 abuts against the baffle 402. In this way, the top end of the support frame 303 is limited by the baffle 402, and its bottom end is limited and supported by the telescopic member 401. In this way, the position of the adjusted conveying roller 301 can be further stably limited and locked. On the other hand, we know that the adjustment of the ball screw has high precision, and the height of the conveying roller 301 can be indirectly fine-tuned and limited, thereby greatly improving the accuracy when adjusting the gluing area.

[0059] Specifically, the baffle 402 can adopt an "L" - shaped structure, that is, the baffle 402 includes a horizontal section and a vertical section that are integrally formed and perpendicular to each other. The horizontal section cooperates with the support frame 303, and the vertical section cooperates with the first lead screw 403.

[0060] Furthermore, in order for the staff to more conveniently rotate the first lead screw 403, the adjusting device 4 further includes a turning handle 404 and a transmission component 405. The turning handle 404 is vertically and rotatably mounted at a suitable position on the workbench 1 (that is, a position convenient for the staff to operate). The turning handle 404 is connected to the first lead screw 403 through the transmission component 405 (such as belt drive or chain drive). In this way, the staff can rotate the first lead screw 403 at a convenient position.

[0061] In one embodiment of the present application, as Figure 9 shown, the gluing mechanism 2 includes a glue chamber 202, a gluing roller 201, and a pair of limiting rollers 203. The glue chamber 202 can be installed above the workbench 1 through a fixing frame. The gluing roller 201 is rotatably mounted at the material discharge port at the bottom of the glue chamber 202, and the gluing roller 201 and the conveying roller 301 cooperate to form a gluing area. The limiting rollers 203 are symmetrically installed on both sides of the bottom end of the glue chamber 202 with the gluing roller 201 as the center and cooperate with the gluing roller 201.

[0062] It can be understood that in the glue chamber 202, the molten glue can be kept warm through a heating component (such as an electric heating wire or an electric heating rod), and the conveying roller 301 can rotate driven by a motor, and then carry out the glue at the material discharge port and coat it on the product.

[0063] Specifically, as Figure 9As shown, there is a gap between the glue - applying roller 201 and the right - hand limit roller 203. This gap represents the amount of glue applied. To achieve the adjustability of this glue - applying amount, the glue - applying mechanism 2 further includes a second lead screw 205 and a frame 204. One of the limit rollers (i.e., the right - hand one) 203 is rotatably installed on the frame 204, and the frame 204 is horizontally slidably installed in the glue chamber 202. The second lead screw 205 is horizontally rotatably installed in the glue chamber 202 and cooperates with the frame 204.

[0064] It can be understood that when the staff rotates the second lead screw 205, the second lead screw 205 acts on the frame 204 to move, and then the limit roller 203 can be driven to move horizontally. In this way, the size of the feeding gap between the limit roller 203 and the glue - applying roller 201 can be adjusted, and thus the control of the glue - applying amount can be realized. To facilitate the rotation of the second lead screw 205 as well, similar to the first lead screw 403, the glue - applying mechanism 2 further includes a knob 207 and a transmission component 206. The knob 207 is vertically rotatably installed on the side of the glue chamber 202 through a rotating rod and is connected to the second lead screw 205 through the transmission component 206 (such as a bevel - gear transmission structure). It can be understood that the knob 207 can drive the second lead screw 205 to rotate through the cooperation of the rotating rod and the transmission component 206 to achieve the adjustment of the feeding gap.

[0065] The working principle of the glue - coating device is as follows:

[0066] To facilitate the glue - applying positioning of the leather, before glue - applying, the back side (i.e., the non - glue - applying side) of the leather can be adhered to the material plate 5, specifically as Figure 17 shown, the double - sided adhesive tape roll 25 can be unrolled and pasted on the material plate 5, then the protective layer on the double - sided adhesive is torn off, and then the leather can be attached to the double - sided adhesive on the material plate 5. Since the thickness of the material plate 5 is a fixed value, the sum of the thicknesses of the material plate 5 and the leather is the thickness of the product. According to this thickness, the thickness of the glue - applying area is adjusted, specifically as Figure 5 shown, that is, the distance D between the glue - applying roller 201 and the conveying roller 301 is adjusted, and it can be adaptively adjusted through the adjusting device 4; then the feeding gap is adjusted adaptively according to the leather. When applying glue, as Figure 3 shown, the staff pushes the material plate 5 along one side of the workbench 1 until one end of it is inserted between the glue - applying roller 201 and the conveying roller 301. The relative movement between the two rollers and the frictional force can make the material plate 5 move through and perform the glue - applying operation. After the glue - applying is completed, the material plate 5 will fall on the other side, and at this time, the staff on the other side can take off the glue - applied material plate 5.

[0067] Further, inspection stations can be added subsequently at this work station. This inspection station can be further divided into two stations, specifically: ① The weighing and code scanning station after glue rolling, that is, weighing and thickness measurement are carried out again after glue coating. Its function is similar to the inspection station after cutting mentioned above. It is mainly for the inspection of the glue after glue coating. The specific process flow is: scan the leather QR code, weigh, and the PLC automatically calculates the glue weight from the weight difference before and after the same barcode and displays it on the PLC screen. The upper and lower limits of the weight can be set on the PLC. If the weight exceeds the equipment range, the equipment will automatically alarm and beep to prompt. ② The leather defect inspection station after glue coating. Of course, these two stations can be set on one working platform, and a UV ultraviolet light source detection device can be used for the equipment. This UV ultraviolet light source detection device can irradiate the leather after glue coating, and uses the reflection and fluorescence effects of ultraviolet light on the glue and the leather surface to detect small defects on the leather surface, uneven glue coating and other problems. Specifically, when ultraviolet light irradiates the leather, if there are flaws or uneven glue coating on the leather, these areas will produce different reflection or fluorescence effects on the ultraviolet light, and then be captured and recorded by the detection device. This detection device can greatly improve the detection accuracy of the glue coating quality of the leather and ensure the smooth progress of subsequent production.

[0068] III. (Leather splitting) Sewing Station C

[0069] ① Equipment name: Sewing machine (not shown). ② Equipment type: Standard machine. ③ Equipment brand: Durkopp. ④ Equipment models: 887 and 868. Specifically, Durkopp 887 is used for sewing the leather splicing line, and Durkopp 868 is used for sewing the decorative beauty line of the leather. Specifically, the staff splices the leather, requiring smooth stitches, no wrinkles, flat and beautiful seams.

[0070] IV. (Pre) Wrapping Station D

[0071] It is mainly completed through the pre-wrapping tooling fixture for the leather of the airbag cover, as Figures 10 to 15 shown. It includes an operating table 6, a plurality of clamping members 7 and a plurality of limiting components 15. There is a placement station for placing the airbag cover in the middle position at the top of the operating table 6. The clamping member 7 is rotatably installed at the side position of the operating table 6 through the first end (bottom end), and the second end (top end) of the clamping member 7 has a clamping portion 701. The limiting component 15 is installed on the operating table 6 and cooperates with the corresponding clamping member 7.

[0072] It can be understood that when pre - wrapping and clamping the airbag cover, first place the airbag cover on the placement station on the workbench 6. Of course, the placement station can limit the horizontal direction of the airbag cover. Subsequently, rotate the clamping part 701 of the clamping member 7 towards the airbag cover until they are in contact. The clamping part 701 is in contact with the top position of the airbag cover. Finally, lock the clamping member 7 through the limiting component 15, and the airbag cover can be limited and fixed in both the horizontal and vertical directions. Similarly, conversely, when loosening the airbag cover, first unlock the clamping member 7 through the limiting component 15, and then reverse the clamping member 7 to make the clamping part 701 away from the airbag cover, which is simple and convenient.

[0073] It can be seen that by rotating the clamping member 7, the clamping and loosening of the airbag cover can be achieved. The clamping method is simple and fast. Compared with the existing technology where the clamping part 701 uses a mobile clamping and fixing method, the clamping member 7 in this application has a larger avoidance space after rotating and loosening, thereby increasing the operating space for leather wrapping and improving the work efficiency of the staff.

[0074] It should be noted that as Figure 12 shown, a boss 14 is detachably installed (such as bolt - installed) in the middle of the top of the workbench 6, thus forming the above - mentioned placement station. Of course, the shape and size of the boss 14 are adapted to the airbag cover. When dealing with airbag covers of different models, we only need to disassemble and replace the corresponding boss 14.

[0075] Furthermore, the number of clamping members 7 is preferably three. As Figure 12 shown, the three clamping members 7 are located on the left side, right side, and rear side of the workbench 6, and the front side is the operation side for the staff. Such a design not only facilitates the operation of the staff, but also the three clamping members 7 can stably clamp and fix the airbag cover.

[0076] This application does not specifically limit the structure of the limiting component 15. The following provides a specific embodiment for illustration:

[0077] As Figure 14 and Figure 15 shown, the limiting component 15 includes a limiting pin 1501, and the limiting pin 1501 is movably arranged on the workbench 6. The bottom end of the clamping member 7 is rotatably installed on the workbench 6 through a rotating shaft 702. A fixing ring 16 is fixedly installed outside the rotating shaft 702, and there are several limiting grooves 17 on the outer side of the fixing ring 16.

[0078] It can be understood that when the clamping member 7 rotates, the clamping member 7 will drive the rotating shaft 702 to rotate synchronously with the fixed ring 16. When the clamping member 7 abuts against the airbag cover, at this time, the limiting groove 17 corresponds to the limiting pin 1501, and then the limiting pin 1501 is inserted into the limiting groove 17 to realize the limiting and locking of the clamping member 7. Of course, multiple limiting grooves 17 can be provided. For example, after the clamping member 7 is reversed and loosened, the clamping member 7 can also be locked through the cooperation of the limiting pin 1501 and the limiting groove 17, so as to prevent the shaking of the clamping member 7 from affecting the pre-cladding process.

[0079] Furthermore, in order to ensure the stability after limiting, the limiting pin 1501 can be movably installed in the working table 6 through an elastic member (such as a spring). When the clamping member 7 is locked, at this time, the limiting pin 1501 can be stably inserted into the limiting groove 17 under the action of elastic force, so as to improve the stability of the clamping member 7 after locking.

[0080] Based on the above embodiments, it should be known that when unlocking the clamping member 7, it is necessary to separate the limiting pin 1501 from the limiting groove 17, and the limiting pin 1501 itself is limited by a spring, so it may be more laborious during the pulling process.

[0081] Therefore, in order to solve the above technical problems, in one embodiment of the present application, as Figure 14 and Figure 15 shown, a plurality of sleeves 18 are installed on the working table 6, and the sleeves 18 are sleeved outside the corresponding limiting pins 1501, and a dial 19 is installed at the end of the limiting pin 1501.

[0082] Specifically, as Figure 15 shown in (a) of, a bevel slope 20 is provided outside the sleeve 18. Of course, the bevel slope 20 has a slope bottom and a slope top. When the clamping member 7 is locked, at this time, the dial 19 cooperates with the slope bottom, as Figure 15 shown in (b) of. When unlocking the clamping member 7, at this time, the worker only needs to rotate the limiting pin 1501 through the dial 19. During the rotation process, the dial 19 will perform a wedge-shaped extrusion fit with the bevel slope 20, so that the limiting pin 1501 moves while rotating and until it moves away from the limiting groove 17 to realize the unlocking of the clamping member 7, as Figure 15 shown in (c) of. It can be seen that through the rotational unlocking method, compared with the method of directly pulling the limiting pin 1501 to unlock, the unlocking method in the present application is more labor-saving and convenient.

[0083] In one embodiment of the present application, as Figure 11As shown in the figure, a base 9 is provided below the workbench 6, and the base 9 is connected to the workbench 6 through a lifting rod 8. The lifting rod 8 can adjust the height of the workbench 6, thereby adjusting the height of the workbench 6 to adapt to the operation of staff with different heights and improving the comfort of operation.

[0084] Specifically, the lifting rod 8 includes a lower steel rod 803, an upper steel rod 801, and a limit screw 802. The lower steel rod 803 is vertically and fixedly installed in the middle of the top of the base 9. The upper steel rod 801 is slidably arranged inside the lower steel rod 803. The limit screw 802 is threadedly engaged with the upper end of the side of the lower steel rod 803. It can be understood that during adjustment, the upper steel rod 801 is slid up and down inside the lower steel rod 803. When it slides to the appropriate height, the limit screw 802 is tightened and abutted against the outside of the upper steel rod 801, and the locking of the upper steel rod 801 can be achieved. Of course, the lifting rod 8 can also be of an electric type. However, since it is not adjusted frequently, the above-mentioned manual adjustment method is preferably adopted.

[0085] Furthermore, in order to facilitate the later leather covering of different positions of the airbag cover, the workbench 6 can be installed at the movable end of the lifting rod 8 (i.e., the top of the upper steel rod 801) through a driving component 13, and the workbench 6 can be rotationally adjusted through the driving component 13. Specifically, the driving component 13 can be started by a foot switch 12, that is, the foot switch 12 is electrically connected to the driving component 13. During adjustment, the staff steps on the foot switch 12 with their foot to start the workbench 6 to rotate by a set angle. Of course, there are various rotation control methods, including but not limited to the following two:

[0086] Method 1: By continuously stepping on the foot switch 12, the workbench 6 is continuously rotated, and when it rotates to the appropriate angle, the foot switch 12 is released. Method 2: Generally, the airbag cover needs to be covered on four sides. Therefore, the workbench 6 can be rotated by 90 degrees as a set unit, that is, each time the foot switch 12 is stepped on, the workbench 6 rotates by 90 degrees. That is to say, each time it rotates, the side of the airbag cover is aligned with the front of the staff. Such a fixed-angle rotation method can improve work efficiency.

[0087] In this embodiment, as Figure 10 shown, the tooling fixture for leather pre-covering of the airbag cover further includes a bracket 10. The bracket 10 is located beside the workbench 6 and is of a multi-layer structure. The bracket 10 can store items for covering, such as inserting knives, hot air guns, etc., so as to facilitate the staff to pick up conveniently during operation and improve work efficiency.

[0088] Furthermore, as Figure 10As shown in the figure, an operating lamp (not shown) can be installed above the operating table 6 through the working frame 11. The operating lamp can evenly illuminate the operating table 6, so that when pre-coating the leather of the airbag cover, the light is more sufficient, ensuring the coating quality. The design of the operating lamp avoids the influence of shadows on the line of sight of the staff, making the operation more accurate and reducing eye fatigue during operation.

[0089] V. Vacuum activation (adsorption) station E

[0090] In this station, two devices can be set, namely a heating box (not shown) and a vacuum adsorption device 26. The specific process flow is as follows: First, put the pre-coated airbag cover into the heating box, and activate the glue coated on the leather under heating conditions, so that the leather fits more tightly with the airbag cover. Then take out the heated airbag cover and put it into the vacuum adsorption device 26, and further adsorb and fix the leather under vacuum conditions to ensure the firmness of the fit between the leather and the airbag cover, and avoid the leather falling off during subsequent processing or use.

[0091] Specifically, as Figure 18 shown, the vacuum adsorption device 26 mainly includes a moving mechanism 2601, an adsorption tooling 2602 and a powerful fan 2603. The moving mechanism 2601 and the adsorption tooling 2602 are installed on the operation platform and cooperate with each other. The powerful fan 2603 is installed above the adsorption tooling 2602. It can be understood that during adsorption, first place the airbag cover on the moving mechanism 2601, move the product to the adsorption tooling 2602 through the moving mechanism 2601, and then the vacuum pump in the adsorption tooling 2602 will adsorb the bottom position of the airbag cover, so that the leather fits tightly with the airbag cover. At the same time, the powerful fan 2603 blows air above the airbag cover to make it cool and solidify quickly, so as to improve the fit degree and firmness of the leather. It should be noted that the moving mechanism 2601 is also common knowledge known to those skilled in the art. For example, a pneumatic slide rail or a motor screw moving device can be used.

[0092] VI. (Label) hot stamping station F

[0093] It is mainly completed by the hot stamping machine 27, as Figure 19As shown in the figure, the hot stamping machine 27 includes a servo system 2701, an upper hot stamping structure 2702, a lower hot stamping die 2703, and a moving structure 2704. Among them, the servo system 2701 is installed at the top of the equipment housing. The upper hot stamping structure 2702 is located inside the housing and is connected to the output end of the servo system 2701. The moving structure 2704 is installed at the bottom inside the housing, and the lower hot stamping die 2703 is installed on the moving structure 2704. It can be understood that during hot stamping, first place the airbag cover on the lower hot stamping die 2703, and move the product to correspond to the upper hot stamping structure 2702 under the action of the moving structure 2704. Subsequently, the upper hot stamping structure 2702 moves downward under the action of the servo system 2701 (such as a hydraulic cylinder) and performs hot stamping on the airbag cover for identification (mainly car horn printing); the surface requirements after processing are: no scalding, no yellowing, clear character contour shape, and no wire drawing phenomenon. It should be noted that the hot stamping machine 27 is also common knowledge known to those skilled in the art, so its specific structure and principle will not be described in detail. For example, the moving structure 2704 can adopt the same structure as the moving mechanism 2601 mentioned above.

[0094] VII. (Nameplate) Punching Station G

[0095] It is mainly completed by a punching machine (not shown). Of course, the punching machine is also common knowledge known to those skilled in the art, so it will not be described in detail. That is, the airbag cover is punched by the punching machine to facilitate the installation of objects such as nameplates on the airbag cover and the installation of the airbag cover itself. The equipment needs to meet the following functional requirements: ① The tooling has a quick change function, and the die change time ≤ 3 min; ② The equipment can be compatible with more than five different types of tooling to achieve interchangeability; ③ The equipment has a function of recycling waste materials; ④ The punching size accuracy is + / - 0.1 mm; ⑤ There is no wrinkling or peeling around the punched hole, and it cannot affect the peel strength.

[0096] VIII. Inspection Station H

[0097] It is mainly a station for detecting the peel strength of the product and performing a full inspection of the appearance (not shown). Of course, it includes relevant peel strength detection tools. This station mainly detects the finished product with leather wrapping on the airbag cover to ensure product quality. The inspection content mainly includes two aspects: one is the peel strength detection, and the adhesion strength between the leather and the airbag cover is tested through a professional peel strength detection tool to ensure that the leather is not easily peeled off. The other is the full appearance inspection, and the staff conducts a comprehensive inspection of the product appearance to ensure that there are no obvious bulges, no wrinkles, it is flat, and there is no damage, etc., meeting the quality standards. After the inspection is completed, the qualified products will enter the final packing process, and the unqualified products need to be reworked or scrapped. This inspection station is an important link in the production process and is of great significance for ensuring product quality.

[0098] The foregoing has described the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements will be made to the present application, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A production system for surface leather wrapping and molding of a safety airbag cover, characterized in that, Including: Including those that are sequentially matched and arranged in a U shape as a whole: A cutting station, which is suitable for cutting the leather into a set shape; A glue coating station, which is suitable for coating glue on the leather; A sewing station, which is suitable for splicing the leather; A pre - covering station, which is suitable for pre - covering the airbag cover with the leather; A vacuum activation station, which is suitable for first heating the glue in the leather to activate it, and then adsorbing and fitting the airbag cover and the leather under vacuum conditions; A hot stamping station, which is suitable for hot stamping marks on the leather; A punching station, which is suitable for punching holes in the airbag cover; And An inspection station, which is suitable for inspecting the quality of the covered airbag cover; The glue coating station includes a glue coating device, and the glue coating device includes a workbench, a glue coating mechanism, a conveying mechanism and an adjusting device. The glue coating mechanism is installed above the workbench, the conveying mechanism is installed on the workbench and cooperates with the glue coating mechanism to form a glue coating area, and the adjusting device is installed on the workbench and is connected and cooperated with the conveying mechanism; the adjusting device is suitable for driving the conveying mechanism to perform lifting adjustment so that the glue coating area adapts to products of different thicknesses; The conveying mechanism includes conveying rollers, a driving device and a support frame. The support frame is horizontally and rotatably installed on the workbench and is connected with the adjusting device. The conveying rollers are horizontally and rotatably installed on the support frame and cooperate with the glue coating mechanism to form the glue coating area. The driving device is installed on the support frame and the output end is connected with the conveying rollers; during adjustment, the adjusting device is suitable for driving the support frame to rotate along the workbench, thereby realizing the lifting adjustment of the conveying rollers; The adjusting device includes a telescopic member, a baffle and a first lead screw. The telescopic member is hingedly installed on the workbench, and the piston end of the telescopic member is hinged with the support frame; the baffle is vertically slidably installed on the workbench, and the first lead screw is vertically rotatably installed on the workbench and cooperates with the baffle; during adjustment, rotate the first lead screw to drive the baffle to adjust its height, and the support frame is suitable for rotating under the drive of the telescopic member until it abuts against the baffle to realize the limit locking of the conveying rollers; the baffle includes a horizontally - formed section and a vertically - formed section that are integrally formed and perpendicular to each other. The horizontally - formed section cooperates with the support frame, and the vertically - formed section cooperates with the first lead screw.

2. The airbag cover surface leather wrapping and molding production system according to claim 1, characterized in that: The glue coating mechanism includes a glue chamber, a glue coating roller and a pair of limiting rollers. The glue chamber is installed above the workbench, the glue coating roller is rotatably installed at the material - discharging port at the bottom of the glue chamber, and the glue coating roller and the conveying rollers cooperate to form the glue coating area. The limiting rollers are symmetrically installed on both sides of the bottom of the glue chamber with the glue coating roller as the center and cooperate with the glue coating roller; The glue application mechanism further includes a second lead screw and a frame body. One of the limiting rollers is rotatably installed on the frame body, and the frame body is horizontally slidably installed in the glue chamber. The second lead screw is horizontally rotatably installed in the glue chamber and cooperates with the frame body. Rotating the second lead screw drives the limiting roller to move horizontally, so as to adjust the feeding gap between the limiting roller and the glue application roller.

3. The airbag cover surface leather wrapping and molding production system according to claim 1 or 2, characterized in that: The covering station includes a pre-covering tooling fixture for the leather of the airbag cover, which includes: an operating table, a plurality of clamping members and a plurality of limiting components. The middle of the operating table has a placement station for placing the airbag cover. The clamping members are rotatably installed on the operating table through the first ends, and the second ends of the clamping members have clamping parts. The limiting components are installed on the operating table and cooperate with the corresponding clamping members. When clamping, the clamping member is adapted to rotate until the clamping part abuts against the airbag cover, and the limiting component is adapted to lock the clamping member. When loosening, the limiting component is adapted to release the lock on the clamping member, and then the clamping member is adapted to reverse and the clamping part moves away from the airbag cover.

4. The airbag cover surface leather wrapping and molding production system according to claim 3, characterized in that: The limiting component includes a limiting pin, and the limiting pin is movably arranged on the operating table. A fixing ring is installed outside the rotating shaft at the first end of the clamping member, and a plurality of limiting grooves are arranged on the outer side of the fixing ring. When the limiting pin cooperates with the limiting groove, the locking of the clamping member is realized.

5. The airbag cover surface leather wrapping and forming production system according to claim 4, characterized in that: The limiting pin is movably installed on the operating table through an elastic member. When the clamping member is locked, the limiting pin is adapted to cooperate with the limiting groove under the action of elastic force.

6. The airbag cover surface leather wrapping and molding production system according to claim 5, characterized in that: A plurality of sleeves are installed on the operating table, the sleeves are sleeved outside the corresponding limiting pins, and the ends of the sleeves are provided with bevel slopes. The bevel slopes have a bottom and a top, and a dial is installed at the end of the limiting pin. When the clamping member is locked, the dial is adapted to cooperate with the bottom of the slope. When unlocking the clamping member, the limiting pin is adapted to rotate through the dial, and then the limiting pin is adapted to move under the wedge-shaped extrusion fit between the dial and the bevel slope until it moves away from the limiting groove.

7. The airbag cover surface leather wrapping and molding production system according to claim 6, characterized in that: A base is arranged below the operating table, and the base is connected to the operating table through a lifting rod. The operating table is installed at the movable end of the lifting rod through a driving component, and the driving component is adapted to rotate and adjust the operating table. The pre-covering tooling fixture for the leather of the airbag cover further includes a foot switch, and the foot switch is electrically connected to the driving component. The driving component is adapted to drive the operating table to rotate a set angle under the action of the foot switch.

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